Solving exercises المعاصر lesson (4)  statics sec 2  first term (lami's and traingle rule)

Solving exercises المعاصر lesson (4) statics sec 2 first term (lami's and traingle rule)

حل تمارين المعاصرالدزس (4) استاتيكا رياضيات لغات 2 ثانوي ترم اول equilibrium of a rigid body under the effect of 2 or 3 forces (lami's -traingle rule)